What is Telnet? What is SSH? Telnet a terminal emulation program that is used to access remote servers. It's a simple, command line tool that runs on your computer and it will allow you to send commands remotely to a server and administer server just as if you were sitting in front it.
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Telnet examples below.
towel.blinkenlights.nl
telnet freechess.org 5000
rainmaker.wunderground.com